Method of making a cylindrical liquid applicator



1952 J. A. PHARRIS ETAL METHOD OF MAKING A CYLINDRICAL LIQUID APPLICATOR2 SHEETS-SHEET 1 Filed Dec. 19, 1949 Dec. 16, 1952 J. A. PHARRIS ETALMETHOD OF MAKING A CYLINDRICAL LIQUID APPLICATOR Filed Dec. 19, 1949 2SHEETS-SHEET 2 Q0 5 4/ 12/ %J min j/ M4 w% w a wpwr /flMr w M% 0 6 J VWVa Patented Dec. 16, 1952 METHOD OF MAKING A CYLINDRICAL LIQUIDAPPLIGATOR John A. Pharris, Butler, Harold J. Fohl, Milwaukee, and VernT. Touchett, Whitefish Bay, Wis., assignorsto E-Z Paintr Corporation, a.corporation of Wisconsin Application December 19, 1949, Serial No.133,774

6 Claims. 1

This invention relates to a method of cementing a cylindrical member ona closely fitting core, and more particularly to a novel method ofmaking a cylindrical liquid applicator.

One feature of the invention is that it provides an improved methodwhereby a flexible cylindrical member may be cemented on a closelyfitting core.

Another feature of the invenion is that it provides a method wherebyboth ends of the core are firmly cemented to the cylindrical memberdespite the fact that the core fits closely in the bore of thecylindrical member.

A further feature of the invention is that the cylindrical member isslid partly over the core so that one end of the core is exposed, thisend iscemented and the cylindrical member is then slid over the cementedportion of the core so that the other end of the core is exposed andthis other end is cemented, and the cylindrical member is then slid backto the center of the core.

An additional feature of the invention is that the cylindrical membermay be formed from a rectangular piece of lambs wool by sewing twoopposite edges together with the leather side out, turning said memberinside out and flattening the seam.

Another feature of the invention is that a good bond at the edges may beinsured by clamping the ends of the member to the core.

Other features and advantages of the invention will be apparent from thefollowing specification and from the drawings, in which:

Fig. 1 is a perspective View of a paint applicator constructed inaccordance with the invention and mounted on an operating handle;

Fig. 2 is a face View of the leather side of a rectangular piece oflambs wool from which the applicator may be formed;

Fig. 3 is an elevational view of said rectangular piece after it hasbeen formed into a cylinder;

Fig. 4 is an enlarged view partly broken away showing the cylindricalmember in the process of being turned inside out;

Fig. 5 is an elevational view of the cylinder after it has been turnedinside out;

Fig. 6 is an elevational View, partly in section, of a jig and spacerupon which the applicator parts may be mounted;

Fig. 7 is an elevational view, partly in section, of the apparatus ofFig. 6, showing one of the applicator parts mounted thereon;

Fig. 8 is a side elevational view of the apparatus of Fig. '7 showingboth of the applicatorparts thereon;

Fig. 9 is a view similar to Fig. 8 but showing the parts in a differentposition;

Fig. 10 is a view similarto Fig. 9 but showing the parts in still adifferent position; and

Fig. 11 is a view similar to Fig. 10 showing the parts in yet adifferent position.

Cylindrical paint applicators of the type shown in Fig. 1 have beenfound to be superior to brushesfor applying paint in many instances. Thestructure comprises a cylindrical applicator designated generally at 29rotatably mounted on an operating handle designated generally at 2|.

The handle 2| includes an enlarged gripping portion 2m, preferably ofwood, and a rod member having a portion 2th extending outwardly from thegripping portion 21a. The rod portion first is bent at right angles toform a portion 210, then is reversely bent at right angles to form aportion 2! d parallel with the portion 2! b and is again bent at rightangles to form a mounting portion Zle extending parallel with theportion 2 lo. A drum 22 is rotatably mounted upon the portion Zle, andthe applicator 20 is frictionally mounted on this drum.

The applicator 23 comprises a cylindrical member having a soft liquidapplying surface, this member preferably being formed of lambs woolmounted upon a hollow core.

In the past it has been the practice tocut a rectangular piece of lambswool and glue the leather side of the rectangular piece onto the coremember. Applicators constructed in this manner very often came apart atthe seam, and the formation of a closely fit seam or juncture of the twoedges of the rectangular piece of lambs wool was solely dependent uponthe skill of the maker, so that the products were not uniform in thisregard and many applicators were made with poor seams. This resulted inu even distribut on of paint on the surface of which it was applied.

We have devised and are herein disclosing and claiming a method ofmaking a cylindrical liquid applicator resulting in a product in whichthe seam is uniform and which will not come apart at the seam despitecontinued use.

The first step in making a liquid applicator according to the novelmethod resides in cutting a rectangular piece of lambs wool from alarger piece, the rectangular piece being cut on the leather side with asharp furrier's knife to avoid cutting through the wool strands. Therectangular piece when properly cut is shown in Fig. 2; the leather side30 facing outwardly in said figure and the wool strands 3| not being cutofi 3 even with the edges of the leather. If desired materials otherthan genuine lambs wool may be used, as for example certain syntheticmaterials on the market.

In the second step the rectangular piece of Fig. 2 is formed into acylindrical member by joining two opposite longer edges together withthe leather side out. The seam 32 is formed by sewing, preferably on afur-type sewing machine. After sewing, the cover is turned inside out ona turning tool 33 having an outwardly turned serrated edge formingprongs 34. In this operation one end of the lambs wool cylinder first isturned in with the fingers fora short distance and the tool 33 is placedin thisinwardly turned end so that the outwardly turned prongs 34 gripthe leather, and the. cylinder is then pulled down over the tool asshown in Fig, 4 so that the member is turned inside out from. theposition of Fig. 3. The lambs wool cylinder with the wool side out isshown in.Fig.. 5. After the cover has been turned so that the wool. sideis out the cover is placed. on a metal dowel and the seam is flattenedwith a hammer, aroller or a similar tool, so that when the applicator isrolled found that if. thecore or the inner surface of the'cover isentirely covered with glue or other cement and the cover is pulled downover the core, the glue will be wiped away from one end of the structureand a poor bond will be obtained between the core and the cover at thisend, and in consequence of this in the past a rectangular piece of lambswool (rather than a cylinder with a permanent seam) has been mounted onthe core. However, our novel. method completely eliminates thisdisadvantage and results in a firm bond over the entire area where thecover contacts the core.

In making the applicator in accordance with our novel method we preferto use the jigs shown in Figs. 6 and 7, although it will be understoodthat these jigs merely facilitate the operation and are not essential tothe performance of the method. A jig 35 is provided on a base 36, thisjig having a hole 3'! in its upper surface. This jig is longer that thecore upon which the cover is to be mounted and has a diameter such thatthe hollow core will slide over the jig. A spacer 3% is provided, thewall of this spacer being about as thick as the wall of the core.Spacers of different lengths may be provided for making applicators ofdifferent lengths, and as seen in 6 the spacer fits closely over the jig35.

Having formed the lambs wool cover into a cylinder with the lambs woolside out and the seam flattened, a spacer of the proper length is placedupon the ,iig 3-5 as shown in Fig. 6 and the core at upon which thecover is tobe mounted is placed upon the jig 35, the bottom of the coreabutting the top of the spacer 8. A ccneshaped member Al is placed atopthe jig 35, an extension Me on the base of the cone fitting into thehole 3'! to hold the cone in place. The flexible lambs wool cover isslid over the cone H and the 35 and is slid over the core 45 and thespacer 38 so that one end of the core isexposed as shown in Fig. 8.

W001 cover are removed from the jig and replaced thereon in invertedposition as shown in Fig. 9. If thespacer L 8- comes on the jig withThis exposed end is covered with cement'and the core 40 and lambs thecover it is replaced on the jig 35 before the core and cover are placedin the inverted position of Fig. 9.

From the position of Fig. 9 the cover is slid down over the cementedportion of the core and over the spacer so that the other end of thecore is exposed as shown in Fig. 10. This end of the core is thencovered with cement. The core and the lambs wool member are againremoved from the jig and again replaced thereon in inverted position asshown in Fig. 11 and the cover is slid down to the center of the core.

The unit may then be removed from the jig and rubber bands or otherclamps placed around the ends of the lambs wool cover to securely bindthe ends to the core, inasmuch as looseness is most likely to occur atthe ends.

While a satisfactory applicator cannot be constructed by gluing orcementing the entire surface of the core and sliding the lambs woolcover over the core because the glue at one end would be wiped off, bygluing only a portion of. the core at a time we are able to constructavery satisfactory applicator having a uniform permanent seam whichcannot come apart, and in whichthe cover is firmly cemented to the core,particularly at the ends. After the cement has d'riedthe applicator maybe mounted on the handle, the hollow core frictionally engaging the drum22.

While we have shown and described certain embodiments of our invention,it is to be understood that it is capable of many modifications.Chang-es, therefore, in the construction and arrangement may be madewithout departing from the spirit and scope of the invention asdisclosed in the appended claims.

We claim:

1. The method of cementing a cylindrical member on a closely fittingcore, comprising: sliding said member partly over the core so that oneend of the core is exposed: cement coating the exposed end of the core;sliding the mem ber over the coated portion of the core so that theother end of the core is exposed; cement coating the exposed end of thecore; and sliding. the member back to the center of the core.

2. The method of cementing a flexible cylindrical member on a closelyfitting core, comprising: sliding said member partly over the core sothat one end of the core is exposed; cement coating the exposed end ofthe core; sliding the member over the coated portion of the core so thatthe other end of the core is exposed; cement coating the exposed end ofthe core; sliding the member back to the center of the core; andclamping the ends of said member to the core.

3. The method of making a cylindrical liquid applicator comprising aflexible cylindrical member mounted on a closely fitting hollow core,including: placing said core on a jig having a spacer thereon so thatsaid core abuts said spacer; sliding said member in one direction oversaid core and spacer so that one end of the core isexposed; cementcoating the exposed end of t e core; sliding the member in the otherdirection over the coated portion of the core so that the other end ofthe core isexposed; cement coating the ex'-- ber mounted on acloselyfitting hollow core, in-- eluding: placing said core on a jighaving" a spacer thereon so that said core abuts said spacer; slidingsaid member over said core and spacer so that one end of the core isexposed; cement coating the exposed end of the core; removing said coreand member from the jig and replacing them thereon in inverted position;sliding said member over the coated portion of the core and over thespacer so that the other end of the core is exposed; cement coating theexposed end of the core; and sliding the member back to the center ofthe core.

'5. The method of making a cylindrical liquid applicator comprising aflexible cylindrical member mounted on a closely fitting hollow core,including: providing a rectangular piece of flexible material having twoopposite edges joined together; placing a cylindrical spacer on a. jig;placing said core on said jig abutting said spacer; sliding said pieceover said core and spacer so that one end of the core is exposed; cementcoating the exposed end of the core; removing said core and piece fromthe jig and replacing them thereon in inverted position; sliding saidpiece over the coated portion of the core and over the spacer so thatthe other end of the core is exposed; cement coating the exposed end ofthe core; sliding the piece backto the center of the core; and clampingthe ends of said piece to the core.

6. The method of making a cylindrical liquid applicator comprising aflexible cylindrical member mounted on a closely fitting hollow core,including: providing a rectangular piece of flexible material having twoopposite edges joined together; placing a cylindrical spacer on a jig;placing said core on said jig abutting said spacer; sliding said pieceover said core and spacer so that one end of the core is exposed; cementcoating the exposed end of the core; removing said core and piece fromthe jig and replacing them thereon in inverted position; sliding saidpiece over the coated portion of the core and over the spacer so thatthe other end of the core is exposed; cement coating the exposed end ofthe core; removing said core and piece from the jig and again replacingthem thereon in inverted position; and sliidng the piece back to thecenter of the core.

JOHN A. PHARRIS.

HAROLD J. FOHL.

VERN T. TOUCHETT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number

